Nuno was optioned to Triple-A Norfolk on Tuesday.
Nuno was terrible in his most recent stint with the Orioles. He served up eight earned runs on eight hits (three home runs) in just 2.2 innings pitched. Some of it might be a result of nagging injuries, as Roch Kubatko of MASN Sports reports that his oblique, hip and knee have all been bothering him. Nonetheless, he'll return to the minors to hopefully get some of his stuff back, while Donnie Hart returns to the majors to fill his spot in the big-league bullpen.